We inform on the progress of our on-going project to identify and
classify old classical novae, using deep UBVR photometry and subsequent
spectroscopy for a proper candidate confirmation, and time-resolved
observations in order to find the orbital period and other physical
properties of the identified old novae. This way, we have already
increased the number of confirmed southern and equatorial post-novae
from 33 to 50, and determined new orbital periods of eight objects. As
an example, we summarise the results on V728 Sco (Nova Sco 1862) which
we found to be an eclipsing system with a 3.32…
Serata con ottime condizioni meteo.
Effettuate riprese sulle Carbon Star BIS007, BIS184, BIS198, BIS196.
Sono stati ripresi anche i campi Landolt necessari per la calibrazione per gli indici di colore, e per la misura in fotometria assoluta.
Nei prossimi giorni si avranno i risultati delle misure in fotometria assoluta e differenziale.
Luminosity functions are one of the most important observational clues
when studying galaxy evolution over cosmic time. In this paper we
present the X-ray luminosity functions of X-ray detected AGN in the SXDS
and GWS fields. The limiting fluxes of our samples are 9.0×10^(-15) and
4.8×10^(-16) erg/cm^2/sec^(-1) in the 0.5 – 7.0 keV band in the two
fields, respectively. We carried out analysis in three X-ray bands and
in two redshift intervals up to z < 1.4. Moreover, we derive the
luminosity functions for different optical morphologies and X-ray types.
We confirm strong luminosity…
